Atomic Energy Authority

Because variations in accurate isotope ratio measurements typically concern only a few parts per 1000 by mass and there are no universal absolute ratios, it is necessary to define some standards. For this purpose, samples of standard substances are produced and made available at two major centers IAEA (International Atomic Energy Authority, U.K.) and NIST (National Institute for Standards and Technology, U.S.). Standards from other sources are also available. These primary standards can be used as such, or alternative standards can be employed if the primary ones are not available. However, any alternative standards need to be related accurately to the primary ones (see formulae below). For example, the material PDB (PeeDee belemnite), used particularly as a standard for the ratio of isotopes, is no longer readily available, and a new standard, VPDB,... 

Standard substances are available from such agencies as the International Atomic Energy Authority (U.K.) and the National Institute for Standards and Technology (U.S.). 

In Britain, a population of thermal reactors fuelled by metallic uranium have remained in use, side by side with more modern ones (to that extent. Lander et al. were not quite correct about the universal abandonment of metallic uranium). In 1956, Cottrell (who was then w orking for the Atomic Energy Authority) identified from first principles a mechanism which would cause metallic (ot) uranium to creep rapidly under small applied stress this was linked with the differential expansion of... 

Mansfield, D. P. (1994). Inherently Safer Approaches to Plant Design. Warrington, Cheshire, U. K. United Kingdom Atomic Energy Authority. 

A. C. Barrel , Hazard Assessment Workshop, Atomic Energy Authority, Harwell, UK, 1984. 

Mackenzie, J., and D. Martin. 1982. GASEXl—A general one-dimensional code for gas cloud explosions. UK Atomic Energy Authority, Safety and Reliability Directorate, Report No. SRD R251. 

Hymes, J. 1983. The physiological and pathological effects of thermal radiation. SRD R 275. U.K. Atomic Energy Authority. 

Martin, D. 1986. Some calculations using the two-dimensional turbulent combustion code Flare. SRD Report R373. UK Atomic Energy Authority. 

A Checklist on Procedures Extracted from the Short Guide to Reducing Human Error" (UK Atomic Energy Authority, 1987)... 

Having established the content of SOPs from the HTA and PHEA, ergonomics guidelines for information presentation can be used to ensure that workers can quickly refer to the instructions and that the possibility of misinterpretation is minimized. An example of such guidelines is United Kingdom Atomic Energy Authority (1991). In this section, the focus will be on the inputs from the HTA and PHEA to the design of SOPs. 

Kirwan, B., Embrey, D. E., Rea, K. (1988). Human Reliability Assessors Guide P. Humphreys (Ed.). Report no. RTS 88/95Q, Safety and Reliability Directorate, United Kingdom Atomic Energy Authority, Wigshaw Lane, Culcheth, Warrington, WA3 4NE, England. 

United Kingdom Atomic Energy Authority (1991). Long Guide to Reducing Human Error in Process Operations. Warrington, UK AEA Technology Ltd. 

UKAEA United Kingdom Atomic Energy Authority... 

As the parent of actinium in this series it was named protoactinium, shortened in 1949 to protactinium. Because of its low natural abundance its chemistry was obscure until 1960 when A. G. Maddock and co-workers at the UK Atomic Energy Authority worked up about 130g from 60 tons of sludge which had accumulated during the extraction of uranium from UO2 ores. It is from this sample, distributed to numerous laboratories throughout the world, that the bulk of our knowledge of the element s chemistry was gleaned. 

Hot Laboratory Centre, Atomic Energy Authority, Cairo, Egypt... 

United Kingdom Atomic Energy Authority Atomic Energy Establishment, Winfrith, England... 

Part 1 Comparison with database. Int J Heat Mass Transfer 47 3375-3385 Thompson B, Macbeth RV (1964) Boiling water heat transfer - burnout in uniformly heated round tubes a compilation of world data with accurate correlations, AEEW-R 356. United Kingdom Atomic Energy Authority, Winfiith, UK... 

Bowring, R. W., 1972, A Simple but Accurate Round Tube, Uniform Heat Flux, Dryout Correlation over Pressure Range 0.7—17 MN/m2 (100-2500 psia), Rep. AEEW-R-789, UK Atomic Energy Authority, Winfrith, England. (5)... 

Edwards, A. R., 1968, Conduction Controlled Flashing of a Fluid and the Production of Critical Flow Rate in One-Dimensional System, AHSB (S)R 147, UK Atomic Energy Authority, Risley, England. (3)... 

---